A COMPUTER MODEL FOR SIZING RAPID TRANSIT TUNNEL DIAMETERS
A computer program was developed to assist the determination of minimum tunnel diameters for electrified rapid transit systems. Inputs include vehicle shape, walkway location, clearances, and track geometrics. The program written in FORTRAN IV calculates the locations of six critical points with respect to the top of the low rail. Twenty triplets of points are considered, each triplet defining a possible circle. Circles not containing all six points are discarded and the minimum-diameter circle is selected. An additional plotting option is available to provide a visual presentation of tunnel, vehicle envelope, and walkway envelope.
- Find a library where document is available. Order URL: http://worldcat.org/isbn/DOTTSCUMTA7524
- Co-sponsors of this report were the Office of the Assistant Secretary for Systems Development and Technology, and the Urban Mass Transportation Administration, under contract to Transportation Systems Center, Cambridge, Massachusetts.
Bechtel Corporation50 Beale Street
San Francisco, CA United States 94119
- Wyman, F P
- Hefland, H J
- Publication Date: 1976-1
- Pagination: 104 p.
- TRT Terms: Car clearances (Railroads); Computer programs; Passenger cars; Rail transit facilities; Railroad tracks; Rapid transit cars; Structural design; Subways; Tunnels; Vehicle design
- Uncontrolled Terms: Track geometry; Tunnel design
- Old TRIS Terms: Clearances; Passenger car design; Subway design
- Subject Areas: Bridges and other structures; Construction; Design; Public Transportation; Railroads; Terminals and Facilities;
- Accession Number: 00148590
- Record Type: Publication
- Source Agency: Department of Transportation
- ISBN: DOT-TSC-UMTA-75-24
- Report/Paper Numbers: DOT-TSC-OST-75-49 Final Rpt., UMTA-MA-06-0025-7518
- Contract Numbers: DOT-TSC-601
- Files: TRIS, USDOT
- Created Date: Mar 15 1981 12:00AM